Jester [1]} consists of 148,092 videos of humans performing hand gestures.
[2]} construct a large-scale cross-domain benchmark with 7 gesture classes, and form a single transfer task \(\mathbf {J}_{\mathcal {S}}\rightarrow \mathbf {J}_{\mathcal {T}}\) , where \(\mathbf {J}_{\mathcal {S}}\)  and \(\mathbf {J}_{\mathcal {T}}\)  contain 51,498 and 51,415 video clips, respectively.
